How can I make the script "just run"?

As someone who uses the MDU script (a lot), I was very pleased with Stacy R's idea to make a system where the user could pre-select the options and dynamically create a version of the script without needing to answer the questions at run-time. Out of this idea came the Minimal Desktop for Ubuntu Script Generator (or MDU-SG), a PHP system that generates a preseeded MDU script. You can find it here: